/* 新的自定义样式，覆盖旧样式 */

/* CSS Variables for easy color changes */
:root {
    --primary-color: #20c997; /* 主题色 */
    --background-color: #f8f9fa; /* 背景色 */
    --sidebar-bg: #212529; /* 侧边栏背景色 */
    --text-color-dark: #343a40; /* 深色文本 */
    --text-color-light: #adb5bd; /* 浅色文本 */
    --border-color: #e9ecef; /* 边框颜色 */
    --shadow-color: rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Open Sans', sans-serif;
    color: var(--text-color-dark);
    background-color: var(--background-color);
    margin: 0;
}

h1, h2, h3, h4, h5, h6, .simple-text {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
}

.wrapper {
    display: flex;
    min-height: 100vh;
    box-shadow: 0 4px 12px var(--shadow-color);
    border-radius: 12px;
    overflow: hidden;
}

/* Sidebar Styling */
.sidebar {
    width: 260px;
    background-color: var(--sidebar-bg);
    color: var(--text-color-light);
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.sidebar.active {
    margin-left: 0;
}

.sidebar-header {
    padding: 20px 25px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-header a {
    color: #fff;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
}

.sidebar-header img {
    margin-right: 10px;
    border-radius: 50%;
}

.sidebar-wrapper {
    padding-top: 15px;
    height: calc(100% - 100px); /* Adjust height for header and footer */
    overflow-y: auto;
}

.sidebar-wrapper::-webkit-scrollbar {
    width: 6px;
}

.sidebar-wrapper::-webkit-scrollbar-thumb {
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
}

.sidebar .nav {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar .nav li a {
    color: var(--text-color-light);
    display: flex;
    align-items: center;
    padding: 15px 25px;
    border-radius: 8px;
    margin: 5px 15px;
    transition: all 0.3s ease;
    text-decoration: none;
}

.sidebar .nav li a:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: #fff;
}

.sidebar .nav li.active a {
    background-color: var(--primary-color);
    color: #fff;
    box-shadow: 0 4px 6px rgba(32, 201, 151, 0.4);
    font-weight: 600;
}

.sidebar .nav li i {
    font-size: 1.25rem;
    margin-right: 15px;
}

.sidebar-footer {
    text-align: center;
    padding: 20px;
    font-size: 0.875rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-footer a {
    color: var(--text-color-light);
    text-decoration: none;
    transition: color 0.3s;
}

.sidebar-footer a:hover {
    color: #fff;
}

/* Main Panel Styling */
.main-panel {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    background-color: #fff;
}

.navbar {
    background-color: #fff;
    border-bottom: 1px solid var(--border-color);
    padding: 15px 20px;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color-dark);
}

.navbar-toggle {
    border: none;
    padding: 0;
}

.navbar-toggle .icon-bar {
    background-color: var(--text-color-dark);
}

.content {
    padding: 20px;
    flex-grow: 1;
}

.container-fluid {
    padding: 0;
}

iframe {
    width: 100%;
    min-height: calc(100vh - 120px); /* Adjust based on navbar height */
    border: none;
    border-radius: 8px;
}

/* Mobile Responsiveness */
@media (max-width: 991px) {
    .wrapper {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: auto;
        margin-left: -100%;
        position: fixed;
        z-index: 1031;
        box-shadow: none;
    }

    .sidebar.active {
        margin-left: 0;
        box-shadow: 0 4px 12px var(--shadow-color);
    }

    .main-panel {
        width: 100%;
        margin-top: 65px; /* Space for the fixed navbar */
    }

    .navbar {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        z-index: 1030;
    }

    .navbar-brand {
        margin-left: 15px;
    }
}